Crossley, Matthew (Reuters) via ffmpeg-devel <[email protected]> 于2026年10月27日周二 17:53写道： > > An ongoing MPEG-DASH livestream will have a manifest with `type="dynamic"`, > which tells the reader that they > should keep checking back for updates. Once the livestream ends the type will > change to "static" indicating no more > updates. You can see this by running the following command and inspecting > `live.mpd` as it goes on: > ``` > ffmpeg -re -f lavfi -i testsrc -t 30 \ > -c:v libx264 -preset veryfast -b:v 800k \ > -c:a aac -b:a 128k \ > -f dash -seg_duration 4 \ > -window_size 5 -extra_window_size 2 \ > -use_template 1 -use_timeline 1 \ > -remove_at_exit 0 \ > live.mpd > ``` > > That change in the type should tell FFMPEG that the stream has ended, but if > you run this command whilst > the stream is ongoing you'll see it never exits: > ``` > ffmpeg -i live.mpd -y out.mp4 > ``` > > This is due to a bug in how "liveness" is decided. It checks the manifest > type value on every parse, > but only assigns a value to `is_live` if the type is dynamic. It never unsets > that flag. > > This commit changes that by always setting that flag on every manifest parse. > Re-running the commands shows > FFMPEG exiting properly when the stream finishes. > > The FATE test suite passes locally when I run it. Testing this required two > FFMPEG processes running concurrently > so no regression test has been added, as I couldn't figure out how to get > FATE working with that. > > Signed-off-by: Matthew Crossley > <[email protected]<mailto:[email protected]>> > --- > libavformat/dashdec.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c > index f3985788f4..af03421943 100644 > --- a/libavformat/dashdec.c > +++ b/libavformat/dashdec.c > @@ -1336,8 +1336,7 @@ static int parse_manifest(AVFormatContext *s, const > char *url, AVIOContext *in) > ret = AVERROR_INVALIDDATA; > goto cleanup; > } > - if (!av_strcasecmp(val, "dynamic")) > - c->is_live = 1; > + c->is_live = !av_strcasecmp(val, "dynamic"); > xmlFree(val); > > attr = node->properties; > -- > 2.50.1 (Apple Git-155) > > > This e-mail is for the sole use of the intended recipient and contains > information that may be privileged and/or confidential. If you are not an > intended recipient, please notify the sender by return e-mail and delete this > e-mail and any attachments. Certain required legal entity disclosures can be > accessed on our website: > https://www.thomsonreuters.com/en/resources/disclosures.html > _______________________________________________ > ffmpeg-devel mailing list -- [email protected] > To unsubscribe send an email to [email protected]
LGTM Thanks Steven _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
